Twisting Supertall

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 628.9 Hz, 82 cents flat of E5, the nearest tine on the comb. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

Tap it to twist the tower further and send light up its glass.

A supertall is a skyscraper more than 300 meters (about 1,000 feet) tall. Some are built to twist as they rise: each floor sits turned a little from the one below. The twist is not just for looks: wind flowing past a tall building makes it sway, and a twisted shape breaks the wind up, so the tower sways less.

Tap it and the floors wring around further, in twelve solid bands with the top turning most, while a ring of light runs up the glass; then they unwind with a little sway as a second ring runs up. Pick the color of the glass in the Splash tab.

Made in Splashery. Its code is MIT.

This link opens it in the Playground. To put it on your own page, add the element and one script tag. Every option.